Combined door latch and lock.



Patented Oct. 3, i899.

N0. 634,365. E. E. NELSON.

EOMBINED DOOR LATCH AND LOCK.

(Application led May 27, 1899.)

2 Sheets-Shee L (No Model.)

WITNESS/5S TH: Norms PETERS co., rHomLrmo.. wAsNlNnYoN. o. c.

Patented Oct. 3, |899.

E. E.NELSON.

COMBINED DOOR LATCH AND LUCK.

. (Application filed May 27, 1899.)

No Model.)

2 Sheets-Sheet 2 @INVENTOR ATUHEYS w: Noms persas on., mmnuruo..wAsums-row, n c.

UNITED STATES PATENT OFFICE.

EDWARD EVERETT NELSON, OF FILLMORE, ILLINOIS, ASSIGNOR OF ONE- HALF TOGEORGE W. PERKINS AND NED B. ALLEN, OF SAME PLACE.

COMBINED DooR LATCH AND LOCK.

SPECIFICATION forming part'of Letters Patent No. 634,365, dated October3, 1899. Application tiled May 27, 1899. Serial No. 718,551. I)(Nomodel.)

vDoor Latch and Lock, of which the following is a full, clear, and exactdescription.

The object of this invention is to provide a novel, simple, andinexpensive combined door latch and lock which is devoid of springsisreliable in service, and which affords means for the locking of both thelatch-bolt and lock-bolt at the same time, thus affording doublesecurity in a very effective manner.

The invention consists in the novel con-v struction and combination ofparts, as is hereinafter described, and defined in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in Which similar characters of reference indicatecorresponding parts in'all the figures.

Figure l is a side view of the lock-case with a side plate thereofremoved7 exposing the Working parts, which are adj usted to lock thelatch-bolt against retraction and hold the locking-bolt proper inunlocked condition. Fig. 2 is a view of the lock-case similar to thatshown in Fig. l, the details of the latch and lock being shown adjustedto release the latch-bolt, which is represented in retractedadjustment. Fig. 3 is a side view of the lockcase with one side removed7exposing the working parts of the latch and lock, that are both shown inlocked condition. Fig. 4 is a transverse sectional view substantially onthe angular line 4 4 in Fig. l. Fig. is a longitudinal sectional view ofthe lock substantially on the line 5 5 in Fig. 3. Fig. 6 is aperspectiveyiew of the locking slide-bolt, and Fig. 7 is a perspectiveview of a novel tiimblei;bar that is a detail of the lock.

In the drawings that represent an embodiment of my invention, Sindicates the case wherein are held the operative details of the lockand latch in proper relative positions. The caseis rectangular andrecessed, as usual inboxl form, to adapt it to. contain the workingparts, to be presently described, and on the open side ofthe case isheld by screws inserted at the corners the cover-plate 8a,

that serves to complete said case when it is secured in place.

The latch-bolt 9 is held to slide longitudinally in the case S throughan opening in one end Wall of the latter by its loose engagement betweenthe spaced studs a, that project from the fixed side wall of the casenear the rear end of the latch-bolt, the latching end of said latch-boltbeing loosely retained in place by 6o contact with the sides of theaperture in the end wall of the case.

Above the slidable latch-bolt 9 a two-part pusher-bar is supported inthe case S and, as shown, comprises a T-block l0 and a rocking 65 barIl, the T-block consisting of three members b b b2, which are arrangedsubstantially in T form. The member o, which is uppermost, is pivotedupon the :fixed side wall of the case S by a pivot bolt or stud o, andbe- 7c low this member in the same upright plane the member b/ isdownwardly projected, While the remaining member b2 is laterallyextended from the' members Z) Z9' intermediate of their ends and awayfrom the end Wall of the case, through which the latch-bolt 9 is adaptedto slide.

The depending limb b' of the T-block l0 is slotted upwardly from itsfree lower edge at right angles, and laterally-projecting pins d 8o onthe sides of the latchbolt 9 have loose engagement with said slot, thelatch-bolt being loosely embraced by the two spaced members formed byanother slot in the limb b. (See dotted lines in Figs. l, 2, and 3.)

The rocking bar ll is slotted vertically and longitudinally in the endportion that is to connect with the limb b2 of the T-block lO, and saidlilnb Z22 is preferably reduced inthickness Where it is inserted withinthe slot 9o in the bar 1l. A transverse slot c is also formed in the endportion of the rocking bar 1l, and a pin e', which projects from thepart of the limb b2 that occupies the vertical slot in the bar l1 passesloosely through the slot 95 e, which affords a rockable and slidablejoint between the T-block l0 and the end of the rocking bar 1l. y

The end of the rocking bar 1l opposite from its slotted extremity ispivoted upon the roo fixed wall of the case 8, as at f, and intermediateof said ends on the top of the rocking bar agravity-block g isiormed orsecured. On the T-block 10 at the upper corner between the limbs b andb2 a weight-block 71, is located, which adds to the heft ot` theT-block, and serves to quickly and reliably depress the limb b2 of theT-block when said limb is elevated above a horizontal position.

The usual knob-shank or spindle 12 isV provided for the actuation of thelatclrbolt 9 through the medium of the parts 10 11, and said shankextends through the case S at each side, as indicated in Fig. 4, for thereception of knobs or equivalent means for turning the shank. Atrip-finger 13 is secured on the shank 12, and the latter beingpositioned below the rocking bar 11 permits the end of the trip-fingerto engage With the lower edge of said bar and raise it, when the shankis rotatably moved in the direction of the arrow u'.

The weight of the T-block lO and rocking bar 11, together with thegravity-blocks g and it thereon, normally depresses the bar 1l until itrests upon the hub of the trip-finger 13, and thus depresses the toe ofthe trip-finger, as shown in Figs. 1 and 3, the bar 11 being supportedsubstantially horizontal.

lVhen the parts l0 11 are in normal adjustment as just described, thesloped end of the latch-bolt 9 is fully projected out of the case S tohave. latched engagement with an ordinary hasp-plate, (not showin) andthus retain closed the door on which the lock is secured.

Vhen the shank or spindle 12 is rocked in the direction of the arrow n',the upward inclination of the rocking bar 11 thus effected willcorrespondingly lift the limb b2 of the T- block 10, as shown in Fig. 2,which will rock the limb b rearwardly and pull the latch-bolt E)inwardly, as clearly represented in said iigure.

The rocking bolt 11 is horizontally supported free to slide endwisethrough a suitable orifice in the end wall of the case S by theprojections i, which are formed on the side wall of the case.

The bolt 14 is elongated and rectangular in eross-section and its bodyis vertically and longitudinally slotted from the inner end sufficientlyto receive the tumbler-bar 15, designed to move freely in said slot. Thetumblerbar 15 is pivoted at one end upon the fixed side wall of the caseS and upon the cover S, and at the opposite end, which is located nearthe forward termination of the slot in the bolt 1l, a cross-pin m isprojected from said tumbler-bar, which pin may engage in either of twospaced notches n it',

vformed in the upper edge of the locking-bolt.

A weight-block 15 is formed or secured upon the upper edge of thetumbler-bar 15 above the cross-pin m and serves to enforce thedepression ot' the tumbler-bar at its free end and cause the cross-pin mto enter either notch n n' above which it may be located.

A scallop o is cut in the lower edges of the parallel members of thelocking-bolt, so as to expose-tho body of the tumbler-bar 15 at thc apexof said scallop, and kcyholcs p, formed oppositelyin the side walls ofthe case 8 near the scallop 0, permit the insertion of a key 16, (shownby dotted lines in Figs. 1, 2, and 3,) so that a rocking movementof saidkey Will cause the bit of the key to contact with the tumbler-bar andraise it a limited degree.

The notches n a' are so relatively located with regard to the cross-pinm and outer end of the locking-bolt 14; that said pin will fall into theoutermost notch n when the key 1G has been manipulated, so as to liftthe tum bler-bar 15 and at the same time draw the bolt 14 into unlockedadjustment, as represented in Fig. 2, the direction of rotatablemovement of the key in this case being indicated by the arrow in Fig. 3.

if the key 16 is moved in the direction of the arrow in Figs. 1 and 2,the tumbler-bar 15 will be rocked upwardly and thus remove the cross-pinm t'rom the notch fit, and immediately after this elevation of the tumbler-bar the bit of the key will engage with the bolt 14 and push itoutwardly, the extent of such sliding movement being just suicient torclease the key from the locking-bolt'when the pin m is directly abovethe notch n', into which said pin now drops and thus locks the bolt 14.against retraction until a proper key is employed for the elevation ofthe tumblerbar 15 and sliding movement of the lockingbolt, as beforeexplained.

Between the latch-bolt i) and the lockingbolt 11 a shackle-bar 17 isheld to slide longitudinally, said bar being designed to simultaneouslylock the' latchfbolt against retraction and also lock the bolt 14 whenit is outwardly projected at the same time the latch bolt is locked. Theshackle-bar 17 is of a length suicient to permit one end to project ashort distance through an aperture in the end wall ot' the case 8opposite the end wall through which the bolts 9 and 14: extend, whilethe opposite end of the shackle-bar is supported to slide adjacent tothe bolts it is to hold against retraction, as will now bc explained.

The inner extremity of the shackle-bar is bent downwardly to form a toeq, and near this toe a slot o is formed longitudinally in the body ofthe bar and transversely thereof. A stud s projects from the fixed sidewall of the case S into the slot r and serves to support the inner endportion of the shackle-bar, so that it may be moved endwise, theposition ot the stud adapting it to maintain the shackle-bar horizontalwhen in normal adjustment. Y

In the lower edge of the shackle-bar, near the end which projectsthrough the end wall of the case 8, two spaced notches u u are formed,which are designed to Separately receive the lower defining edge of theaperture in the end wall of the case 8 through which the shackle-barextends.

The face of the depending toe q of the IIO shackle-bar 17 is nearly inthe same horizontal plane with the upper surface of the weightblock lsothat an adjustment of the shacklebar toward the weight-blocker in thedirection of the arrow e' in Fig. 2 will locate the toe q directly overthe weight -block, and when such an adjustment is effected the notch u',that is outermost, will receive the edge of the oase 8, as beforementioned, which engagement will obviously retain the shacklebar againstlongitudinal movement.

It will be seen that the location of the toe q over the weight-block 15awill prevent the tumbler-bar 15 from receiving upward rocking movementto release the locking-bolt let, so that it will be impossible toretract the bolt 1,4 or project it outwardly by anyinstrument fromeither side of the lock until the toe q of the shackle-bar is removedfrom over the weight-block.

On the upper edge of the shackle-bar 17, at a suitable distance from thedependingtoe q, an abutment-flange c is formed, which eX- tends upwardlyat the rear of the latch-bolt 9 and may contact therewith.

The notches u u are so spaced apart and the abutment-danger: sorelatively positioned that when the shackle-bar 17 is adjusted bysliding it in direction of the arrow 'y to engage the innermost notch uwith the edge of the case 8 the abutment-liange o will allow thelatch-bolt 9 to be freely operated for its release from a hasp-plate orother keeper. (Not shown.)

In case it is desired to double lock the door having the improved lockon it, the bolt 14 is first thrown outward to engage with a haspplate orother keeper by the use of the key 16, and then the shackle-bar 17 islifted at its rear end and shifted inwardly in the direction of thearrow z, so as to interlock the notch et' with the edge of thecase-wall, which adjustment will secure the latch-bolt and locking-boltin projected condition and prevent the release of either bolt until theshackle-bar is moved to eect such a release.

The shackle-bar 17 may have a weightbloclc 17 'd formed or secured onits upper edge near the notch u, and if employed will aid in depressionof the bar, so as to cause an engagement of either notch u u with theedge of the case-wall, as occasion may require.

It will be noticed that all working parts of the combined latch and lockare very simple and cheap in production and not liable to becomeinoperative from ordinary wear.

It is a feature of advantage that the operative details of the improvedlatch and lock are actuated in part by gravity, dispensing with springs,which increases durability and renders the device very reliable inservice.

Having thus described my invention, I

claim as new and desire to secure by Letters Iatent- 1. The combination,with a case, of a slidebolt, a slidable locking-bolt, and a shacklebarhaving two lateral projections and slidably disposed between andparallel with said bolts, said shackle-bar being adapted by adjustmentto engage the lateral projections thereon with the latch-bolt andlocking-bolt, thereby securing them against retraction.

2. The combination, witha case, of a latchbolt slidable longitudinallythereon, and means to slide said boltfrom withoutthe case', of alocking-bolt operative with a key, and a longitudinally-adjustableshackle-bar, slidable between the latch-bolt and locking-bolt, said barhaving spaced notches at its rear end to engage with the wall of thecase, and lateral projections above and below thereon, respectivelyadapted to impinge upon the inner end of the slide-bolt and upper sideof the locking-bolt, whereby to lock said bolts projected from the case.

3. The combination with a case, and a longitudinally-slidable latch-bolttherein, of a two-part pusher-bar comprising a weighty T- block looselyengaging the latch-bolt for its sliding movement, and a rocking barpivoted by one end to the case and jointed upon the -T-block, to receiveupward rocking movement, and means to rock the bar and T-block for theretraction of the latch-bolt.

et. ln a device of the character described, the combination with thetwo-part pusher-bar comprising a three-limbed T-block, pivoted to thelock-case at the upper end of the T- block, and a rocking bar pivoted byone end on the lock-case, the otherl end of said bar having a rockingand sliding connection with a lateral member of the T-block, a slidablelatch-bolt, aloose connection between the 'depending member of theT-block and the slidebolt7 and means to liex the two-part pushervbarnear its joint, for the actuation of the slide-bolt.

5. In a device of the character described, the combination with a case,and a latch-bolt and a locking-bolt, both slidable in the case, of ashackle-bar held to slide in the case between the latch-bolt andlocking-bolt, projections on Ysaid shackle-bar adapted to hold the saidbolts against retraction, said bar having spaced notches near oneprojecting end thereof, which by separate engagement with a part-of thecase are adapted to hold the IIO shackle-bar in engagement with thelatchbolt and locking-bolt, or retractedtherefrom.

EDWARD EVERETT NELSON.

Iiitnesses:

FRANK HERREN, REUBEN J. WRIGHT.

